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9966 [12]
3 years ago
11

A hypnotist's watch hanging from a chain swings back and forth every 0.98 s. What is the frequency (in Hz) of its oscillation?

Chemistry
1 answer:
podryga [215]3 years ago
6 0

Answer:

1.02 Hz

Explanation:

frequency= (1/t) = (1/0.98) = 1.02 hz

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describe how a pure dry sample of solid lead carbonate can be obtained from sodium carbonate solution and lead nitrate solution
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Answer:

Soluble salts can be made by reacting acids with soluble or insoluble reactants. Titration must be used if the reactants are soluble. Insoluble salts are made by precipitation reactions.

Making insoluble salts

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